Matched context for intermixing and back-flow

The page lists matched contexts for intermixing and back-flow.

Share - intermixing	Share - back-flow	Phrase
23.75%	27.51%	prevent {intermixing or back-flow} [perform operation]
22.67%	4.08%	air {intermixing or back-flow}
13.65%	6.55%	fuel {intermixing or back-flow}